1,1-Dioxo-2,3-dihydro-3-thienyl thiocyanate 2,3-Dihydro-3-thiocyanatothiophene 1,1-dioxide 73909-05-4 NSC 202492 Thiocyanic acid, 2,3-dihydro-3-thienyl ester, S,S-dioxide (9CI) Thiophene, 2,3-dihydro-3-thiocyanato-, 1,1-dioxide